The ADS1212 and ADS1213 are precision, wide dynamic range, delta-sigma Analog-to-Digital (A/D) converters with 24-bit resolution operating from a single +5V supply. The differential inputs are ideal for direct connection to transducers or low-level voltage signals. The delta-sigma architecture is used for wide dynamic range and to ensure 22 bits of no-missing-code performance. An effective resolution of 20 bits is achieved through the use of a very low-noise input amplifier at conversion rates up to 10Hz. Effective resolutions of 16 bits can be maintained up to a sample rate of 1kHz through the use of the unique Turbo Modulator mode of operation. The dynamic range of the converters is further increased by providing a low-noise programmable gain amplifier with a gain range of 1 to 16 in binary steps. The ADS1212 and ADS1213 are designed for high-resolution measurement applications in smart transmitters, industrial process control, weigh scales, chromatography and portable instrumentation. Both converters include a flexible synchronous serial interface that is SPI compatible.
The ADS1212 and ADS1213 are 22‑bit delta‑sigma analog‑to‑digital converters offering no‑missing‑code performance, low power consumption, and programmable gain. The ADS1212 provides a single channel, while the ADS1213 includes a 4‑channel multiplexer for flexible measurement applications such as smart transmitters, weigh scales, and portable instruments.
The document includes detailed specifications, pin definitions, block diagrams, typical performance curves, mechanical dimensions, and important warranty and handling notices. It is intended for designers and engineers who need precise conversion and configurable interface options.
| Input Voltage Range | 0 V to +5 V |
|---|---|
| Programmable Gain Amplifier Settings | 1, 2, 4, 8, or 16 |
| Power Supply Voltage | 4.75 V to 5.25 V |
| Power Dissipation (Analog) at +25 °C | 1.4 mW |
| Effective Resolution at 10 Hz | 22 bits |
| Effective Resolution at 1000 Hz (Turbo Mode Rate 16) | 18 bits |
The devices operate from a supply voltage of 4.75 V to 5.25 V.
At a 10 Hz data rate the converters provide 22‑bit effective resolution.
The ADS1213 includes a 4‑channel input multiplexer.